add missing keys

Author: marticliment

src/UniGetUI.Core.LanguageEngine/Assets/Data/LanguagesReference.json

@@ -12,10 +12,12 @@
   "et": "Estonian - Eesti",
   "en": "English - English",
   "es": "Spanish - Castellano",
+  "es-MX": "Spanish (Mexico)",
   "fa": "Persian - فارسی‎",
   "fi": "Finnish - Suomi",
   "fil": "Filipino - Filipino",
   "fr": "French - Français",
+  "gl": "Galician - Galego",
   "gu": "Gujarati - ગુજરાતી",
   "hi": "Hindi - हिंदी",
   "hr": "Croatian - Hrvatski",